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Figure 14.6
Flood frequency and extent as a function of solids blockage |
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for four events. This does not reflect the total volume of flood water, as a substantial volume of flood water stays within the catchment and is then drained by the channel. All of the runoff lost to the catchment, has, however, gone on to flood elsewhere. This figure dramatically summarizes in one graph how solids can limit the capacity of a channel to drain its catchment. |
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Figure 14.7
Fraction of runoff lost from the catchment as a function of solids blockage |
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